Elevator fire-door



(No Mader.) 2 sheetssheen 1.

Kw/HW Pa, ented Oct. 29

i UNITED STATES PATENT OEEICE.

ROBERT W. HARE, ALLEGHENY, PENNSYLVANIA.

' ELEvAToR FIRE-Doos.

SPECIFICATION forming part of Letters atent No. 548,872, dated October 29,1895. Application filed Apl13,l.894. Serial No. 507,496. (No model.)

To @ZZ whom it may concern.:

Be it known that LROBERT W. HABE, a citizen of the United States of America, residing at Allegheny, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Elevator Fire-Doors, of which the following is a specification, reference being hadl to the accompanying drawings.

y This invention relates to certain new and useful improvements in elevators, and more particularly to hatch-covers for closing the elevator-shaft.

The object of the invention is to employ novel and inexpensive means whereby a series of doors or hatch-covers are automatically stored at the top of the elevator-shaft, retainedat this point, or released at the will of the operator; furthermore, to design a device of this class that will be simple in its construction, strong, durable, and effectual in its operation.

With the above and other objects in view the invention consists in the novel construction, combination, and arrangement of parts to be hereinafter more particularly described, and specifically pointed out in the claims.

In describing the invention in detail reference is had to the accompanying drawings, forming a part of this specification, and wherein like letters of reference indicate similar parts throughout the several views, in whichm l Figure 1 is a side elevation of an elevator shaft and car equipped with my improvement. Fig. 2 is a detail perspective View of the overhead locking and releasing mechanism. Fig. 3 is an enlarged side view'of the adj ustingesleeve carried by the elevator-car.

This view serves to more accurately illus` trate the releasing mechanism. Fig. 4 is a perspective view of the doglarrang'ed on the elevator-car. Fig. 5 is a detail side viewA of the bracket through which wthe adjustingsleeve operates and is retained in position. Fig. 6 is a top view of the same. Fig. 7` is a plan view of the adjusting-sleeve, and Fig. 8 is a side view of the same.

In the drawings, A represents an elevatorshaft; B, the car; C, thehand-controlled rope;

D D D, the movable doors; d, the stops for l the same at the various landings; E E, the rigid door-lifters arranged on the top of the elevator-car; F, the operating-dog pivoted at` f,- G, the movable sleeve provided with lateral projections g g g at different points in its length; H, the bracket in which the sleeve is movably mounted, said bracket being provided with screw-threads h for the purpose of attaching thesame to the elevator-car and interiorly recessed, as shown in Fig. 5 of the drawings, forming seats for the projections g g g of the sleeve G.

I represents the lever at the top of the elevator-shaft pivoted at c' and having pivotally attached on its opposite end a vertically-operating rod J, passing through a guide j, attached tothe side post of the elevator. Said ro'd is further providedwith a projection or shoulderl K and on its free end with a lever L, said lever being further provided with a curved projection M. Directly in alignment with the vertical rod .I is rigidly attached to the side post of the elevator a lug j or projection forming a seat for the lever when the latter is brought to its normal position.

The locking and releasing mechanism at the top of the elevator-shaft further consists in a series of links M M or levers operating in conjunction with each other.

N indicates the lever centrally pivoted a n on the sheave-timber of the elevator-shaft, said arm carrying on its free ends links MM. Another link O connects the lower end of lever N and lever I. The links M connect the lever N with arms integral with shafts O O', which are mounted in suitable bearings P P. The outer extremities of the shafts are `provided with arms passed through slidinglyoperated bolts Q, operating in guides R R.

S represents the automatic stop arranged on the hand-controlled rope C.

Operation: We willassume, for the purpose IOO brought in contact with vthe doors, and they are deposited at their respective floors in the well-known manner. When it is desired to again store the doors upon bolts, the adjusting-sleeve Gis lowered to its 'maximum degree in its bracket, the car ascends, collects the doors, and the dog F engages with the` stop or shoulder K on the vertical rod or lever J, thus carrying the same upward to a predetermined distance, which will admit the swinging lever to be placed on the lug or seat j, as will be readily understood. At this point the doors are slightly above the supportingbolts Q, and the mechanism again assumes its Aoriginal position.

When it is desired to operate the car with'- out in any way interfering with the doors at l the top of the elevators-haft, the adjustingj sleeve Gr is arranged to its utmost height on the hand-controlled rope, and the elevator is vtherefore prevented from rising to the point where the dog F engages with the curved projection or incline M. By this means the elevator car is permitted to operate without interfering with the locking device, furthermore providing a safeguard against the accidental displacement of the doors.

It will be noted that the operating-dog F is pivotally attached to the car and is only permitted to move upwardly and is provided with a shoulder at its inner face. This is so arranged in order to permit the downward movement of the car after the dog has passed the swinging arm. Attention is also directed to the fact that the sleeve encircle's the handA controlled rope and the top of the same comes in contact with the automatic stop arranged on the handcontrolled rope.

In actual practice Ihave found it advan= tageous to arrange the mechanism at the top of the elevator-shaft and their operating parts in such a manner that when the sleeve is adj usted to its utmost height the elevatorcar will be permitted to rise to the level of the top door.

The sleeve, as will be noted, has three independent adjustments for the purpose of locking, unlocking, and retaining the door in position.

It will be seen that various changes may vbe made in the detals of construction without departing from the spirit of this invention I therefore do .not wish to limit myself to this specific construction.

Hav-ing fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. The combination of hatch doors adapted to be carried by `the car, means for holding the same at the top of the elevator shaft and means for adj ustably and automatically limiting the extent of the rise of the car, whereby, when the vcar ascends to its full extent, it will engage the doors, and will not engage them when the extent of its rise is lessened, substantially as described.

2. The combination of hatch doors adapted to be carried by the car, means for holding the same at the top of the elevator shaft, a Valve rope, and a stop on the car adapted to engage a stop on the rope and to stop the ascent of the car at a position below the doors, said stop on the car being movable, whereby the car may be permitted to ascend to a greater extent and to engage the doors, substantially as described.

3. In an elevator the combination, with the hand-controlled rope and the stop thereon, of the car, the adjustable sleeve encircling said rope and provided with lateral projections at different points in its length, and the bracket secured to the car and adapted to support said projections and provided with notches to allow said projections to pass, substantially asdescribed.

4C. In an elevator, the combination, with the car, a series of hatch-doors adapted to be carried by the car, and means at the top of the elevator shaft adapted to hold and release said doors, of the hand controlled rope, an adj ustable sleeve on the car encircling said rope, and a stop on said rope, substantially as described,

5. In an elevator, the combination, with the ear, a series of hatch-doors adapted to be carried by the car, and means 'at the top of the elevator shaft to automatically store and release said doors of the hand controlled rope, 'an adjustable sleeve on the car encircling said rope, and a stop on said rope, substantially as described.

6. In an elevator, the combinati-on with the car, rigid door-lifters on the top of said car, the series of hatch-doors, and means for automatically sustaining-and releasing said doors at the top of the elevator shaft, of a hand-comtrolled rope, an adjustable sleeve on the car encircling said rope, and a stop on said rope, substantially as described.

7. In an elevator, the combination of the car, a series of hatch-doors adapted to be carf ried on the Itop ofthe car, means at the top of the elevator shaft adapted to sustain and release said doors, the handcontrol1ed rope and stop thereon, the adjustable sleeve carried by the car and encircling said rope, and a dog carried by the car and adapted to actuate said sustaining and releasing means, substantially as describede IOO IIO

IIS

8. The combination of hatch doors adapted extent of its rise is lessened, substantiallf as to be carried by the car, supports for the described. l1o doors at the top of the shaft, means for au- `In testimony whereof I afx my signature tomatioally releasing the supports, and means in presence of two Witnesses.

for adj ustably and automatically limiting the ROBERT W. HARE. extent of rise of the oar, whereby when the Witnesses:

car aseends to its full extent it will engage H. C. EVERT,

the doors and Willnot engage them when the J. C. GAITHER, Jr.' 

